The invention relates to a method and a device for replacing a contact wire that is fastened by hangers to a support cable on an overhead line of a track, wherein continuous operation is achieved by simultaneously winding up an old contact wire and pulling...

Synchronization device for laying machines (12, 13) for laying cables (11), such as electric conductors, optical fibres, ropes or suchlike; the machines (12, 13) comprise laying means consisting of at least a pair of capstans (14) combined and associated w...

The method involves converting the mechanical energy produced by the traction force (25) generated by movement of the machine (1) on one side and mechanical fixing of one end of the cable (7) on the other into hydraulic energy for producing hydraulic press...

A boom positioning device for high-position working, capable of ensuring a desired positional accuracy even in positioning a work location at the tip end of a boom from a distant place, the device comprising an imaging means (4) having a multi-axis driving...

Method and apparatus to regulate the tension for stretching machines (10, 11) comprising means (15) to feed at least a conductor (12), cable or optical fibre to be stretched, and braking/traction assemblies (16, 22) which comprise a drum (17, 18) on which ...

Device (10) to detect the tension for stretching machines (11) comprising means (15) to feed at least a conductor (12), cable or optical fibre to be stretched, and at least a braking/traction device (16) which comprises at least a drum (17, 18) on which th...